Boot-crimp



IUNITED siarngsbrrnnr orrron.

JOSEPH G. VHIT'IIER, OF ATTICA, INDIANA.

. BOOT-CRIME Specification of Letters Patent No. 31,922, dated April 2,1861.

To all whom fit may concern.'

Be it known that I, JOSEPH G. VHITTIER, of Attica, in the county ofFountain and State of Indiana, have invented a new and ImprovedBoot-Crimping Machine; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings, making part ofthis specification, in which--Figure l, is a rear elevation of the said machine as employed forbreaking. Fig. 2, a vertical section at Fig. 3, is a detachedperspective view of the crimp employed.

Similar letters of reference indicate corresponding parts in the severalfigures.

My invention consists lst. In an improved construction of crimping jaws.2nd. In an improved combination of devices for setting and releasing thejaws as hereinafter explained.

To enable others skilled in the art to make and use my invention I willproceed to de scribe its construction and operation.

A, A, are two standards, affording journal bearings 'for a horizontalshaft B, to which are rigidly secured segment gears C, C, which takeinto racks cl, CZ, upon a frame D, adapted to slide in ways on thestandards A.

E, E, are levers rigidly secured to the shaft B, and connected by a handbar E.

F, is the break or form, secured between suitable lugs projectinginwardly from the frame D, as shown in Fig. l.

Gr, is an angular bar fitting the upper edge of the form F, and securedto the upper ends of the frame D, in order to strengthen the same duringthe operation of first pressing the boot front into shape as hereinafterexplained.

H, H', are a pair of metal plates, constituting the rigid backs of thecrimping jaws. The faces I I of the said aws are composed of leather orother fiexible material attached at the lower edges to plates z', 2',and supported by springs J, J, of gum elastic or other suitablematerial.

The crimping aws are secured at any desired proximity and released atwill by the following mechanism: K, is a horizontal rod formed with ahead la, at its rear end and a screw thread at the front, upon whichscrew thread is a set nut L. M, is a toggle forming when in the positionshown in Fig. 2, a rigid bearing between the plate I-I,

f and the head 7c, of the rod K. The two members of the toggle M, arepivoted in the center to a vertical bar N, working ina guide n, andattached at its lower end to a lever O, which lever is fulcrumed in themain frame of the machine and projects in front. P is a fra-mesupport-ing the rear end of the rod K, in such a manner asto aford itfree longitudinal play.

Q, in Fig. 3, represents a crimping knee provided'with a crank screw R,and clamping jaws g, g, and applied to the form F, after the operationof breaking to stretch the boot front and thus hold it till dry.

rIhe operation is as follows The parts being in the position shown inFig. 2, and the nut set in such position upon the rod as to compress thejaws together with the requisite force, a piece of leather to constitutea boot front is placed around the form F, and the levers E, being drawnforward and downward by means of the connecting bar E, the leather isforced downward betweenthe jaws, and thereby pressed into proper shapeupon the form F. A slight pressure of the hand uponthe front end of thelever O, throws up the toggle M, thereby instantaneously releasing thejaws. The frame D, is then partially elevated and the bar G, removed andreplaced by the conlining knee Q, to which the leather is attached byfixing its edge under the jaws Q. The frame D, is then again forced downand the leather tightly stretched around the form F, by means of crankscrew R. This done, the frame is again elevated, the pin f, taken outand the form and crimping knee removed'with the crimped front nposition, and' set away for the latter to dry. A new forni is thenplaced in the machine and the operation proceeded with as before.

, A great advantage in my invention is that the boot front is crimped bythe machine upon the same form upon which it is left to dry thusperforming the work much more effectually and saving the time and laborinvolved in transferring the boot front to the crimping board by hand.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent; is,

l. The construction of the crimping jaws 5 With rigid backs, flexiblea-ces and interposed springs, substantially as and for the purposes setforth.

2. The combination `of the rodK, set nut plained.

J. Gr. VVHITTIER. lVitnesses Oo'rAvIUs KNIGHT, CHS. W. BENDR.

